A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

What came first, the chicken or the egg?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

Solve the counting riddle by identifying the number of triangles in the given picture.

Find the number of squares in the below picture

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Three playing cards in a row. Can you name them with these clues? There is a two to the right of a king. A diamond will be found to the left of a spade. An ace is to the left of a heart. A heart is to the left of a spade. Now, identify all three cards.

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)